1 med. zucchini
1 sm. onion, chopped
1 can tomatoes
3 tbsp. butter
1/2 c. Parmesan cheese

Cut unpeeled zucchini into 1/4 inch slices. In large frying pan, cook onion in butter until clear. Add zucchini, fry 10 minutes. Add chopped tomatoes with juice. Bring to boil. Season with salt and pepper. Simmer 20 minutes. Top with Parmesan cheese. Heat until cheese melts.